Latest Contributions by ThomasKakatsakis

‎12-16-2020

I am working with US National Grid (USNG) for the whole United States, containing 1 km by 1km polygons which diverge around UTM boundaries. I need to assign the values of a raster in GRID format which also has a 1 km x 1 km resolution, for each respective USNG square. They do not exactly match up. I have tried several methods, and need to determine the best method to accurately get a representation of the raster value for each polygon. I am looking for a solution in ArcMap or ArcGIS Pro. The methods I have tried are: Spatial Join - convert the Raster cells into point features, and perform a spatial join with the USNG. Pros/Cons: relies on only the closest raster cell. Zonal Statistics as Table - Calculate the mean raster value for each zone (which are USNG grids). Pros/Cons: can average several raster cells which overlap the grid square, but not as good for cases when one cell covers the majority of the grid square. Snap Raster - convert the USNG into a raster format(?), and use Snap Raster to align the two. Or some variation of this, where I am aligning the two layers together. Each approach has advantages and limitations. Is there an additional method I have not considered? Do you have any input on how to best achieve the goal of assigning raster values to a grid, for a very large dataset?

‎12-02-2019

Hi Owen -- Thanks again for the reply. I was able to display my GPX layers in web app templates, but I am unable to add the apps to the new Story maps. There is no option to include these apps even within the sidecar as you mentioned. Is there any other work around in order for me to display these feature in my Story Map? What I am trying to create requires line features to make sense. I have tried uploading the line features instead as a GeoJson or as a Shapefile. However I always get the error "unable to import this shapefile/geojson file". I believe this is because the files are invalid but I am unsure how to fix this problem. Alternatively, is there a time frame for a future update which would support GPX layers, or an update which can add apps to the story map? Thank you

‎11-04-2019

My story can be seen at ArcGIS StoryMaps The map being displayed can be seen here https://arcg.is/8yiTj I am trying to add the feature title "LINE FEATURE TO BE DISPLAYED", but this and other line features will not show up within the story maps despite showing up on ArcGIS online. Thanks for replying.

‎10-30-2019

I am creating a story map with the new stories, and have added a map I created on ArcGIS online. The point features of the map show up within my story, but the line features will not display. How can I get my lines appear and integrate them into my story? Thank you

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Date Last Visited	‎12-16-2020 10:11 PM

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Latest Contributions by ThomasKakatsakis

Best method to assign raster values to USNG?

Re: Display line features on the new stories

Re: Display line features on the new stories

Display line features on the new stories